21133448

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 48729600

約数和(自身を除く): 27596152

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 79, 119, 136, 158, 238, 281, 316, 476, 553, 562, 632, 952, 1106, 1124, 1343, 1967, 2212, 2248, 2686, 3934, 4424, 4777, 5372, 7868, 9401, 9554, 10744, 15736, 18802, 19108, 22199, 33439, 37604, 38216, 44398, 66878, 75208, 88796, 133756, 155393, 177592, 267512, 310786, 377383, 621572, 754766, 1243144, 1509532, 2641681, 3019064, 5283362, 10566724, 21133448]

約数ペア:

[(1, 21133448), (2, 10566724), (4, 5283362), (7, 3019064), (8, 2641681), (14, 1509532), (17, 1243144), (28, 754766), (34, 621572), (56, 377383), (68, 310786), (79, 267512), (119, 177592), (136, 155393), (158, 133756), (238, 88796), (281, 75208), (316, 66878), (476, 44398), (553, 38216), (562, 37604), (632, 33439), (952, 22199), (1106, 19108), (1124, 18802), (1343, 15736), (1967, 10744), (2212, 9554), (2248, 9401), (2686, 7868), (3934, 5372), (4424, 4777)]